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| Rigol MSO 5000 hardware/software revisions |
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| NoisyBoy:
TK and tv84, thanks for the info, it is great that they keep track of the update to each scope by serial number, that certainly makes me feel better although it is more work for them. Martin72, I wonder if the fan is exactly the same, but that they reduced the fan speed to reduce noise in exchange for higher operating temperature. If so, I wonder if the fan is thermostatically controlled. |
| Martin72:
They told me that no changes was done on the board, some components were added to the fan and the display. Can this be true….adding components to make a fan silent, I can understand ( resistor in series perhaps). But adding components to make the display brighter… For what I can see without opening the case is, that the fan could be the same as before (Sunon, 2-Wire). Or not... In fact, they must have done something with the fan, because the wire are normally fixed on the side by a tie wrap - here, they forgot to fixed it again. |
| uncle_bob:
Hi Did they add some rubber padding to isolate the fan from the rest of the structure? That's a pretty common fix. Previous reports have suggested that the display "fix" involves a couple resistors. Bob |
| Martin72:
Hi Bob, The fan is still directly mounted on the plate. Martin |
| NoisyBoy:
Could they have added thermistor fan control to keep it at lower rpm during light use? I know the Papst fan used in my Agilent system power supplies have thermistor in them for variable speed control. I wonder if Rigol did the same? The higher temperature you observed definitely points to a lower cfm, if the fan is the same, that means lower rpm. |
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